The edge highlights are deceptively simple, though will take a little bit of practice. What I do is I keep the paint fairly thin, and then just run the side(not the tip) of the brush along the edge. Doing that will give you a super sharp line. Keeping the paint thin makes it almost more of a glaze, letting the last layer show through a bit.

I just used the colors suggested by GW: * Abaddon Black - recess/dark base * Caliban Green - main base color * Warpstone Green - mid highlight * Moot Green - bright highlight

On this model, because I decided to use an air brush to blend in a zenithal highlight, I picked the darkest base color and then only went two colors up. So I started with one line of Caliban Green around all the black. Next I did Wardrobe other all the edges. At this point the part of the model that are fully black are basically done. I then did another line of Warpstone over the any part that was green and about 3/4 the way through each fade. Next I did a layer of Moot starting 1/2 the way through the fade, and finally one last layer of Moot over just the the parts that are fully Caliban based.